This claim is simply untrue. DDT has never been banned where malaria is endemic. In devloped countries, it was only banned after malaria had already been eliminated. Where its use has declined in the third world, this is because it has become ineffective as mosquitos evolve resistance. Indeed Rachel Carson's Silent Spring pointed out that DDT was being overused as its effectiveness as an insecticide declined.

It reflects poorly on the climate skeptics that they advance this untruth in support of their own views. And while interviews should represent what the subject has said, it's disappointing that those claims which are easily verified were not checked.